function Box(pox,poy,color){
    pox = pox=== undefined?50:pox;
    poy = poy=== undefined?50:poy;
    this.x = 0;
    this.y = 0;
    this.width = pox;
    this.height = poy;
    this.vx = 0;
    this.vy = 0;
    this.rotation = 0;
    this.scaleX =1;
    this.scaleY =1;
    this.color = utils.parseColor(color);
    this.lineWidth =1;
}
Box.prototype.draw = function(context){
      context.save();
      context.translate(this.x, this.y);
      context.rotate(this.rotation);
      context.scale(this.scaleX, this.scaleY);

      context.lineWidth = this.lineWidth;
      context.fillStyle = this.color;
      context.beginPath();
      context.rect(0, 0, this.width, this.height);
      context.closePath();
      context.fill();
      if (this.lineWidth > 0) {
        context.stroke();
      }
      context.restore();
}
